HMS Ocelot, Chatham dockyard, 9 June 2012 1. Oberon class boat built at Chatham, completing in 1964. She was the last submarine built at Chatham, and was in service until 1991. 27 Oberons were operated by five navies including 13 by the Royal Navy. The Oberons were succeeded by the Upholder class.
![Biber [Beaver] midget submarine 105, Royal Navy Submarine Museum, Gosport, 2 September 2013 1. One-man midget submarine with external torpedoes developed in desperation by the Germans in 1944. 324 built. Many were lost on operations but they achieved very little.](https://photos.smugmug.com/Ships/Royal-Navy-Submarine-Museum/i-4SfJnqR/1/a6e33b18/Ti/2013-09-02_2698nc11iw-Ti.jpg)
![Biber [Beaver] midget submarine 105, Royal Navy Submarine Museum, Gosport, 2 September 2013 2.](https://photos.smugmug.com/Ships/Royal-Navy-Submarine-Museum/i-4hcRFFq/1/5e9d9ba1/Ti/2013-09-02_2704nc11ivw-Ti.jpg)
![Biber [Beaver] midget submarine 105, Royal Navy Submarine Museum, Gosport, 2 September 2013 3. Several Bibers survive, but this is the only operational example. It was restored to working order in 2003 for the Channel 4 Salvage Squad TV programme.](https://photos.smugmug.com/Ships/Royal-Navy-Submarine-Museum/i-jrjxqkf/1/626363f0/Ti/2013-09-02_2720nc11ivnw-Ti.jpg)
